Why tight hip flexors cause lower back stiffness Tight hip flexors, especially the psoas major and iliacus, attach near the lumbar spine and pelvis. When these muscles are shortened from …

Why tight hip flexors cause lower back stiffness Tight hip flexors—particularly the iliopsoas complex—attach directly to the lumbar spine and front of the pelvis. When these muscles are short or …

Hip flexor releases for lower back stiffness: quick relief and lasting mobility Hip flexor releases for lower back stiffness can provide fast, tangible relief when tight hips pull on the …